I think what's generally considered a "drivers car" is something with precise steering that gives great feedback; balanced neutral handling with precise turn-in on corners where the car just goes where you point it without understeer or oversteer, yet either of those conditions can be induced with throttle control; great seat-of-the-pants feel as to what the car is doing while cornering; quick crisp throttle response and control; great brakes that give you exactly what you want in direct proportion to how hard you push the pedal; great easy-to-read instrumentation that gives you exactly the information you need with just a quick glance; a smooth, short-throw, solid-position-in-each-gear shifter for the transmission; superb gearing and ratios between the trans and diff so that you aren't over-geared or under-geared; just the right amount of exhaust note, volume and sound feedback from the mechanicals and tires (not too quiet); great seats that comfortably hold you in place but aren't too soft so you can still feel what the car's doing.

Those are just some of the things that come to mind. As you can see, not an easy list to check off for a car builder but if the Camaro team does the Z/28 right, it will be that champion drivers car driving enthusiasts have dreamed of.